using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;
using LuaInterface;
using LuaFramework;
using System;
using UnityEngine.EventSystems;

public class VHScrollRect : ScrollRect  
{  
      
    public ScrollRect parentScroll;  
  
    public bool isVertical = false;  
  
    private bool isSelf = false;  
  
    public override void OnBeginDrag(PointerEventData eventData)  
    {  
        Vector2 touchDeltaPosition;  
#if (UNITY_ANDROID || UNITY_IPHONE) && !UNITY_EDITOR
        touchDeltaPosition = Input.GetTouch(0).deltaPosition;  
#else
        float delta_x = Input.GetAxis("Mouse X");  
        float delta_y = Input.GetAxis("Mouse Y");  
        touchDeltaPosition = new Vector2(delta_x, delta_y);  
#endif    
        if (isVertical)  
        {  
            if (Mathf.Abs(touchDeltaPosition.x) < Mathf.Abs(touchDeltaPosition.y))  
            {  
                isSelf = true;  
                base.OnBeginDrag(eventData);  
            }  
            else  
            {  
                isSelf = false;  
                if(parentScroll){
                    parentScroll.OnBeginDrag(eventData);  
                }
            }  
        }  
        else  
        {  
            if (Mathf.Abs(touchDeltaPosition.x) > Mathf.Abs(touchDeltaPosition.y))  
            {  
                isSelf = true;  
                base.OnBeginDrag(eventData);  
            }  
            else  
            {  
                isSelf = false;  
                if(parentScroll){
                    parentScroll.OnBeginDrag(eventData);  
                }
            }  
        }  
    }  
  
  
    public override void OnDrag(PointerEventData eventData)  
    {  
        if (isSelf)  
        {  
            base.OnDrag(eventData);  
        }  
        else  
        {  
            if(parentScroll){
                parentScroll.OnDrag(eventData);  
            }
        }  
    }  
          
  
  
    public override void OnEndDrag(PointerEventData eventData)  
    {  
        if (isSelf)  
        {  
            base.OnEndDrag(eventData);  
        }  
        else  
        {  
            if(parentScroll){
                parentScroll.OnEndDrag(eventData);  
            }
            
        }  
    }  
      
}